/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include<string.h>
#include"dht11.h"
#include"core_json.h"
#include"sht30.h"
#include"oled.h"
#include"esp8266.h"
#include "core_mqtt.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
static int report_tempRH_json(void);
static int parser_led_json(char *json_string, int bytes);
static void proc_uart1_recv(void);

#define FLAG_WIFI_CONNECTED   (1<<0)  /* WIFI连接路由器标志位 */
#define FLAG_SOCK_CONNECTED   (1<<1)  /* socket连接服务器标志位 */

#define	DEF_ROUTER_SSID		"silverylf"
#define	DEF_ROUTER_PWD		"1234567890"

#define MQTT_BROKER_HOSTNAME	"weike-iot.com"
#define MQTT_BROKER_PORT		1883
#define MQTT_BROKER_USERNAME	"lingyun"
#define MQTT_BROKER_PASSWORD	"lingyun"

#define MQTT_CLIENT_ID		"BearKE-lf"
#define MQTT_PUB_TOPIC		"$Sys/Studio/Uplink/"MQTT_CLIENT_ID
#define MQTT_SUB_TOPIC		"$Sys/Studio/Downlink/"MQTT_CLIENT_ID
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
int report_tempRH_json(void);
int parser_led_json(char *json_string, int bytes);
void proc_uart1_recv(void);
void mqtt_subscribe_proc(void);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
//static int report_tempRH_json(void);
//static int parser_led_json(char *json_string, int bytes);
//static void proc_uart1_recv(void);

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
	uint32_t      last_time = 0;   /* 每隔3秒上报一次，上一次上报的时间  */
	unsigned char   buf[256];   /* wifi模块socket接收的buffer */
	int            rv;

	char           ipaddr[16];
	char           gateway[16];
	unsigned char  wifi_flag = 0;

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_TIM6_Init();
  MX_TIM2_Init();
  MX_USART1_UART_Init();
  MX_ADC1_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  blink_led(BlueLed, 500);
//  beep_start(3, 500);
  printf("Start BeraKE1 5G NB-IoT Board Example Program v1.0\r\n");
  OLED_Init();
  OLED_ShowBanner(TIME_1S *2);

  esp8266_module_init();

  while (1)
  {
	 /* wifi没有连接上路由器的话，开始连接无线路由器并ping测试 */
	  if( ! (wifi_flag&FLAG_WIFI_CONNECTED) )
	  {
		  if( esp8266_join_network(DEF_ROUTER_SSID, DEF_ROUTER_PWD) ) //wifi(id, pwd)
		  {
			  esp8266_module_init();
			  HAL_Delay(2000);
			  continue;
		  }

		  if( esp8266_get_ipaddr(ipaddr, gateway, sizeof(ipaddr) ) )
		  {
			  HAL_Delay(1000);
			  continue;
		  }

		  if( esp8266_ping_test(gateway) )
		  {
			  HAL_Delay(1000);
			  continue;
		  }


		  wifi_flag |= FLAG_WIFI_CONNECTED; /* set wifi connected flag */
	  }

	  /* 网络socket没有连上socket服务器的话就开始连接服务器 */
	  if( ! (wifi_flag & FLAG_SOCK_CONNECTED) )
	  {
		  rv = mqtt_connect(MQTT_BROKER_HOSTNAME, MQTT_BROKER_PORT, MQTT_CLIENT_ID, MQTT_BROKER_USERNAME, MQTT_BROKER_PASSWORD);

		  if( rv )
		  {
			  HAL_Delay(1000);
			  continue;
		  }
		  /* 连上MQTT Broker后订阅下发三色LED控制命令的主题 */
		  mqtt_subscribe_topic(MQTT_SUB_TOPIC, Qos0, 1);

		  wifi_flag |= FLAG_SOCK_CONNECTED; /* set socket connected flag */
	  }

	  /* 接收并打印socket服务器发过来的数据 */
	  if( (rv=esp8266_sock_recv(buf, sizeof(buf))) > 0 )
	  {
		  parser_led_json((char *)buf, rv);
		  printf("ESP8266 socket receive %d bytes data: %s\n", rv, buf);
	  }

	  /* 处理MQTT订阅收到的消息 */
	  mqtt_subscribe_proc();

	  /* 定时发送采样温度数据到MQTT Broker,这里修改为30s上报一次  */
	  if( time_after(HAL_GetTick(), last_time + 30000) )
	  {
		  rv = report_tempRH_json();


		  if( 0==rv )
		  {
			  printf("ESP8266 mqtt publish message ok\r\n");
		  }
		  else
		  {
			  printf("ESP8266 mqtt publish message failure, rv=%d\r\n", rv);
			  wifi_flag &= ~FLAG_WIFI_CONNECTED;

			  if( esp8266_ping_test(gateway) )
			  {
				  wifi_flag &= ~FLAG_WIFI_CONNECTED;
			  }
		  }

		  	  last_time = HAL_GetTick();
	  	  }



    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 1;
  RCC_OscInitStruct.PLL.PLLN = 20;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2
                              |RCC_PERIPHCLK_ADC;
  PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
  PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
  PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_PLLSAI1;
  PeriphClkInit.PLLSAI1.PLLSAI1Source = RCC_PLLSOURCE_HSE;
  PeriphClkInit.PLLSAI1.PLLSAI1M = 1;
  PeriphClkInit.PLLSAI1.PLLSAI1N = 9;
  PeriphClkInit.PLLSAI1.PLLSAI1P = RCC_PLLP_DIV7;
  PeriphClkInit.PLLSAI1.PLLSAI1Q = RCC_PLLQ_DIV2;
  PeriphClkInit.PLLSAI1.PLLSAI1R = RCC_PLLR_DIV6;
  PeriphClkInit.PLLSAI1.PLLSAI1ClockOut = RCC_PLLSAI1_ADC1CLK;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure the main internal regulator output voltage
  */
  if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */
int report_tempRH_json(void)
{
	char      buf[128];
	float     temperature, humidity;
	uint32_t  temp, humd;
	int       rv;

	if( SHT30_SampleData(&temperature, &humidity)< 0)
	{
		return -1;
	}

	/* json数值格式{ "key": value}
	 * 更多可以查看 https://www.jianshu.com/p/fa2b28998adf
	 */
	memset(buf, 0, sizeof(buf));
	snprintf(buf, sizeof(buf), "{\"Temperature\":\"%.2f\", \"Humidity\":\"%.2f\"}", temperature, humidity); // \" = "(转义字符)

	temp = (int)(temperature*100);
	humd = (int)(humidity*100);
	OLED_ShowTempHumdity(temp, humd, TIME_1S *2);

	rv = mqtt_publish(MQTT_PUB_TOPIC, Qos0, buf);

	printf("mqtt publish topic[%s] with msg '%s' %s, rv=%d\r\n", MQTT_PUB_TOPIC, buf, rv ? "failure" : "ok", rv);

	return rv;
}

int parser_led_json(char *json_string, int bytes)
{
	JSONStatus_t    result;
	char            save;
	char            *value;
	size_t          valen;
	int             i;

	printf("DBUG: Start parser JSON string: %s\r\n", json_string);

	result = JSON_Validate(json_string, bytes);

	/*JSON document is valid so far but incomplete*/
	if( JSONPartial == result )
	{
		printf("WARN: JSON document is valid so far but incomplete!\r\n");
		return 0;
	}

	/*JSON document is not valid JSON*/
	if( JSONSuccess != result )
	{
		printf("ERROR: JSON document is not valid JSON!\r\n");
		return -1;
	}

	/*Parser and set LED status*/
	for(i=0; i<LedMax; i++)
	{
		result = JSON_Search( json_string, bytes, leds[i].name, strlen(leds[i].name), &value, &valen);
		if(JSONSuccess == result)
		{
			save = value[valen];
			value[valen] = '\0';

			if(!strncasecmp(value, "on", 2))
			{
				printf("DBUG: turn %s on\r\n", leds[i].name);
				turn_led(i, ON);
			}
			else if(!strncasecmp(value, "off", 3))
			{
				printf("DBUG: turn %s off\r\n", leds[i].name);
				turn_led(i, OFF);
			}

			value[valen] = save;
		}
	}

	return 1;
}

void proc_uart1_recv(void)
{
	if(g_uart1_bytes > 0)
	{
		HAL_Delay(200);
		if(0 != parser_led_json(g_uart1_rxbuf, g_uart1_bytes))
		{
			clear_uart1_rxbuf();
		}
	}
}

void mqtt_subscribe_proc(void)
{
	unsigned char			buf[256];
	int						packet_type;
	MQTTString				topicName;
	unsigned char			dup;
	int						qos;
	unsigned char			retained;
	unsigned short			msgid;
	unsigned char			*payload = NULL;
	int						payloadlen = 0;
	int						rv;

	memset(buf, 0, sizeof(buf));

	packet_type = MQTTPacket_read(buf, sizeof(buf), transport_getdata);

	if( packet_type < 0 )
	{
		return;
	}

	switch( packet_type )
	{
		case 0: break;
		case PUBLISH:
		{
			rv = MQTTDeserialize_publish(&dup, &qos, &retained, &msgid, &topicName, &payload, &payloadlen, buf, sizeof(buf));
			if(rv == 1)
			{
				printf("message arrived %s\n",payload);
				parser_led_json((char *)payload, payloadlen);
			}
			else
			{
				printf("message arrived error, rv=%d\n", rv);
			}
			break;
		}
		case CONNACK:
		case PUBACK:
		case SUBACK:
		case UNSUBACK:
		case PUBREC:
		case PUBREL:
		case PUBCOMP:
			break;

	}

}


/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
